Optical element driving mechanism

ABSTRACT

An optical element driving mechanism is provided, including a movable part for connecting an optical element; a fixed part, wherein the movable part can move relative to the fixed part; a driving assembly for driving the movable part to move relative to the fixed part; and a supporting assembly, wherein the movable part can move relative to the fixed part in multiple dimensions via the supporting assembly.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of pending U.S. patent applicationSer. No. 17/109,740, filed Dec. 2, 2020 and entitled “Optical elementdriving mechanism”, which claims the benefit of U.S. ProvisionalApplications No. 62/950,520, filed on Dec. 19, 2019, and No. 63/031,026,filed on May 28, 2020, and China Patent Application No. 202022235223.X,filed on Oct. 9, 2020, the entirety of which is incorporated byreference herein.

BACKGROUND OF THE INVENTION Field of the Invention

The application relates in general to an optical element drivingmechanism, and in particular to an optical element driving mechanismthat includes a driving assembly.

Description of the Related Art

Thanks to ongoing technological developments, recent electronic devices(such as tablet computers and smartphones) usually include a lens modulecapable of aiding in photography or recording video, and some are evenequipped with dual lens modules, bringing users a wealth of visualenjoyment. Optical components generally include a wide-angle lens with ashort focal length and a telephoto lens with a long focal length, andthe functions of the two are not the same. For example, if the focallength is shorter, the viewing angle is wider. In order to take intoaccount and improve the recording quality, such as shooting range, depthof field, etc., the electronic device can be equipped with multipleoptical elements with different focal lengths.

When consumers buy electronic devices, the appearance and the videorecording function are very important factors. Consumers tend to chooseelectronic devices that are thin and have good recording capabilities.As a result, a periscope mechanism has been created, which changes thedirection of the optical path to allow for the thinning of electronicdevices when multiple optical elements are provided.

In addition, when the user uses the electronic device, it may shake,which makes the photographs or videos taken blurred. Therefore, how toprovide a periscope mechanism having better displacement correction anddisplacement compensation, is an important issue.

BRIEF SUMMARY OF INVENTION

To address the deficiencies of conventional products, an embodiment ofthe invention provides an optical element driving mechanism, including amovable part for connecting an optical element; a fixed part, whereinthe movable part can move relative to the fixed part; a driving assemblyfor driving the movable part to move relative to the fixed part; and asupporting assembly, wherein the movable part can move relative to thefixed part in multiple dimensions via the supporting assembly.

In some embodiments, wherein the movable part further includes: anoptical element holder for connecting the optical element; wherein theoptical element is configured to receive an incident light adjusted byan optical path adjusting unit; a driving assembly holder for connectingat least part of the driving assembly; wherein the optical elementholder is movable relative to the driving assembly holder; wherein theoptical element holder is movable relative to the fixed part; whereinthe driving assembly holder is movable relative to the fixed part;wherein the driving assembly is configured to drive the optical elementholder to move along a first dimension relative to the driving assemblyholder; the driving assembly is configured to drive the driving assemblyholder to move along a second dimension relative to the fixed part;wherein the driving assembly is used for driving the driving assemblyholder to move along a third dimension relative to the fixed part;wherein the first and second dimensions are different; wherein thesecond and third dimensions are different; wherein the movement in thefirst dimension is a movement parallel to a first direction; wherein themovement in the second dimension is a movement parallel to a seconddirection; wherein the movement in the third dimension is parallel to amovement of a third direction; wherein the first, second and thirddirections are not parallel to each other; wherein the first, second andthird directions are perpendicular to each other; wherein the seconddimension is parallel to an optical axis of the optical element.

In some embodiments, the optical element holder further includes anotch, and an arrangement direction of the notch and the optical axis isperpendicular to the third direction; the arrangement direction of thenotch and the optical axis is parallel to the first direction; thedriving assembly holder further includes a metal reinforcement assemblyfor strengthening the mechanical strength of the driving assemblyholder, and the metal reinforcement assembly includes: a main body withnon-metallic material; a first reinforcement element having metalmaterial and at least partially embedded in the main body; the firstreinforcement element is at least partially exposed on the main body; asecond reinforcement element at least partially embedded in the mainbody; the second reinforcement element is at least partially exposed onthe main body; the parts of the first and second reinforcement elementsexposed on the main body extend along a direction that is parallel tothe third direction; a third strengthening element having magnetic metalmaterial and at least partially embedded in the main body; the thirdstrengthening element is at least partially exposed on the main body;and the third strengthening element is configured to strengthen thedriving capability of the driving assembly.

In some embodiments, the fixed part further includes: a base; and ancasing arranged along a main axis with the base; the casing furtherincludes: a top wall having a plate-like structure, wherein the top wallis not parallel to the main axis, and the top wall is perpendicular tothe main axis; and a side wall, having a plate structure and extendingfrom an edge of the top wall, wherein: the top wall is not parallel tothe side wall; the side wall is parallel to the main axis; the base hasa plate-shaped structure and is not parallel to the main axis; the baseis perpendicular to the main axis; the optical axis is not parallel tothe main axis; and the main axis is perpendicular to the optical axis.

In some embodiments, wherein the maximum dimension of the opticalelement driving mechanism in the main axis direction is smaller than thedimension of the optical element driving mechanism in the optical axisdirection; wherein the maximum dimension of the optical element drivingmechanism in the main axis direction is smaller than the dimension ofthe optical element driving mechanism in the third direction.

In some embodiments, wherein the supporting assembly further includes: afirst elastic element, wherein the optical element holder is movablyconnected to the driving assembly holder via the first elastic element;the first elastic element has a plate-shaped structure; an extensiondirection of the first elastic element is parallel to a first imaginaryplane; a second elastic element, wherein the optical element holder ismovably connected to the driving assembly holder via the second elasticelement; the second elastic element has a plate-shaped structure; anextension direction of the second elastic element is parallel to thefirst imaginary plane; centers of the first and second elastic elementsare arranged along the third direction; the first imaginary plane passesthrough the first elastic element and the second elastic element; thefirst imaginary plane is perpendicular to the main axis; the firstimaginary plane is parallel to the optical axis; a third elasticelement, wherein the movable part is movably connected to the fixed partvia the third elastic element; the third elastic element has anelongated structure, and an extension direction of the third elasticelement is not parallel to the optical axis direction; the third elasticelement is not parallel to the first imaginary plane; and the thirdelastic element is perpendicular to the first imaginary plane.

In some embodiments, the optical element driving mechanism furtherincludes a sensing assembly for sensing the movement of the movable partrelative to the fixed part, and the sensing assembly includes: a firstsensing element for sensing the movement of the optical element holderrelative to the driving assembly holder; wherein the first sensingelement is used for sensing the movement of the optical element holderrelative to the driving assembly holder in the first dimension; a secondsensing element for sensing the movement of the driving assembly holderrelative to the fixed part; the second sensing element is used forsensing the movement of the driving assembly holder relative to thefixed part in the second dimension; a third sensing element for sensingthe movement of the driving assembly holder relative to the fixed part;the third sensing element is used for sensing the movement of thedriving assembly holder in the third dimension relative to the fixedpart.

In some embodiments, the sensing assembly further includes: a firstcontrol unit electrically connected to the driving element and thesecond sensing element and controlling the driving element according tothe sensing signal output by the second sensing element; the firstcontrol unit and the second sensing element are located in a packagingunit; the first and third sensing elements and the driving assembly areelectrically connected to an external control unit; the first controlunit is electrically connected to the external control unit; thepackaging unit is located in the optical element driving mechanism; thefirst and third sensing elements are located in the optical elementdriving mechanism; and the external control unit is located outside theoptical element driving mechanism.

In some embodiments, the optical element driving mechanism furthercomprises a circuit element electrically connected to the first, secondand third sensing elements, wherein: the driving assembly and the firstsensing element are respectively located on opposite sides of thecircuit element; the driving assembly and the second sensing element arerespectively located on opposite sides of the circuit element; thedriving assembly and the third sensing element are respectively locatedon opposite sides of the circuit element; the fixed part furtherincludes a base and an casing, the casing and the base are arrangedalong a main axis; the base further includes an receiving portioncorresponding to at least one of the first, second, and third sensingelements; in the first direction, the maximum size of the receivingportion is greater than the maximum size of at least one of the first,second, and third sensing elements; a protection element arranged in thereceiving part for protecting at least one of the first, second andthird sensing elements; the protection element directly contacts thereceiving portion and at least one of the first, second, and thirdsensing elements; a limiting structure adjacent to the receiving portionto limit the setting range of the protection element; in the directionperpendicular to the first direction, the maximum size of the currentlimiting structure is greater than the maximum size of the receivingportion.

In some embodiments, the fixed part further includes a frame, which isfixedly arranged on the casing and has a first circuit electricallyconnected to the driving assembly; the first circuit is at leastpartially buried in the frame and is not exposed outside the frame; theframe has an extension portion extending toward the base; when viewedalong the main axis direction, the extension portion is located at thecorner of the fixed part; the extension corresponds to the side wall;the extension portion has a recessed structure to accommodate anadhesive component; the connecting element directly contacts the casingand the frame; the connecting element directly contacts the base; thefirst circuit is at least partially located in the extension portion;the first circuit is at least partially buried in the extension portion;the first circuit is electrically connected to the circuit element; thefirst circuit is electrically connected to the circuit element via anelectrical connecting member; the surface of the first circuit thatdirectly contacts the electrical connecting member and the surface ofthe circuit element that directly contacts the electrical connectingmember are not parallel; the surface of the first circuit directlycontacting the electrical connecting member and the surface of thecircuit element directly contacting the electrical connecting member areperpendicular to each other; the fixed part further includes aninsulating element that directly contacts the electrical connectingmember; the insulating element directly contacts the base; and theinsulating element directly contacts the frame; the insulating elementdirectly contacts the casing.

BRIEF DESCRIPTION OF DRAWINGS

The invention can be more fully understood by reading the subsequentdetailed description and examples with references made to theaccompanying drawings, wherein:

FIG. 1 is a schematic diagram showing an electronic device according toan embodiment of the present invention.

FIG. 2 is a schematic diagram of an optical element driving mechanismaccording to an embodiment of the present invention.

FIG. 3 is an exploded view diagram of the optical element drivingmechanism.

FIG. 4 is a schematic diagram of the optical element driving mechanismafter assembly.

FIG. 5 is a schematic cross-sectional view taken along the line 2-A-2-A′in FIG. 3 .

FIG. 6 is a schematic diagram of the optical element driving mechanism(the casing, the frame and the driving assembly holder are omitted).

FIG. 7 is a schematic diagram of the driving assembly holder.

FIG. 8 is a schematic diagram of the optical element driving mechanism(the casing is omitted).

FIG. 9 is a bottom view of the optical element driving mechanism.

FIG. 10 is a partial cross-sectional schematic diagram of the casing andthe base.

FIG. 11 is an exploded view diagram of the frame, the first circuit andthe electrical connecting member.

FIG. 12 is a schematic cross-sectional view taken along the line2-B-2-B′ in FIG. 3 .

DETAILED DESCRIPTION OF INVENTION

The making and using of the embodiments of the optical mechanisms arediscussed in detail below. It should be appreciated, however, that theembodiments provide many applicable inventive concepts that can beembodied in a wide variety of specific contexts. The specificembodiments discussed are merely illustrative of specific ways to makeand use the embodiments, and do not limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood to one of ordinary skill inthe art to which this invention belongs. It should be appreciated thateach term, which is defined in a commonly used dictionary, should beinterpreted as having a meaning conforming to the relative skills andthe background or the context of the present disclosure, and should notbe interpreted in an idealized or overly formal manner unless definedotherwise.

For ease of description, in the following content and the drawings, thefirst direction 2-D1 (Y axis), the second direction 2-D2 (Z axis), andthe third direction 2-D3 (X axis) may be used to describe the directionor orientation. The first direction 2-D1, the second direction 2-D2, andthe third direction 2-D3 are different and not parallel to each other.In some embodiments, the first direction 2-D1, the second direction2-D2, and the third direction 2-D3 are perpendicular or substantiallyperpendicular to each other. In some situations, the movement in thedimension may include linear movements and rotations.

FIG. 1 is a schematic diagram of an electronic device 2-1 equipped withan optical element driving mechanism 2-100. The electronic device 2-1may be a tablet computer, a smart phone, etc. The optical elementdriving mechanism 2-100 is usually arranged on the top area of theelectronic device 2-1. The optical element driving mechanism 2-100 maybe a periscope mechanism. In some embodiments, the electronic device 2-1may be further equipped with another optical element driving mechanism2-150X. The optical element driving mechanism 2-100 and the opticalelement driving mechanism 2-150X can form images respectively to improvethe recording quality of the electronic device 2-1.

FIG. 2 is a schematic diagram showing the optical path adjustment unit2-P and the optical element driving mechanism 2-100 of the electronicdevice 2-1. The optical path adjustment unit 2-P can change the opticalpath of the incident light 2-LT. Specifically, when the incident light2-LT from the outside reaches the optical path adjustment unit 2-P alongthe main axis 2-Q, the optical path adjustment unit 2-P is used toadjust the incident direction and exit direction of the incident light,thereby changing the path of the light 2-LT, and the incident light 2-LTcan reach the optical element 2-LS of the optical element drivingmechanism 2-100. The optical element 2-LS, such as a lens element or alens assembly containing a plurality of lens elements, is arranged inthe movable part 2-30 (FIG. 3 ). The optical axis 2-O is a virtual axispassing through the center of the optical element 2-LS. The optical pathadjustment unit 2-P may be a mirror, a prism, or a beam splitter. Theincident light 2-LT is substantially perpendicular to the optical axis2-O and enters the optical path adjustment unit 2-P, and then by theoptical path adjustment unit 2-P, the incident light 2-LT passes throughthe optical element 2-LS to the photosensitive element 2-IMM to obtainimages. Through the driving mechanism of the optical element drivingmechanism 2-100, the optical element 2-LS and the photosensitive element2-IM can move relatively to achieve optical zooming, auto-focusing (AF)or optical image stabilization (OIS). In some embodiments, it may alsobe defined that the optical element driving mechanism 2-100 includes theoptical path adjustment unit 2-P.

The optical path adjustment unit 2-P is fixedly connected to the fixedpart 2-10, which can simplify active alignment and facilitate assembly.In some embodiments, in the first direction 2-D1, the maximum size ofthe optical path adjustment unit 2-P is larger than one-half of theoptical element driving mechanism 2-100. In some embodiments, in thefirst direction 2-D1, the maximum size of the optical path adjustmentunit 2-P is larger than two-thirds of the optical element drivingmechanism 2-100.

The photosensitive component 2-IM includes a photosensitive element2-IMM and a correction component 2-IMC. The photosensitive element2-IMM, such as an image sensor, is used to receive light. The correctioncomponent 2-IMC is used to drive the photosensitive element 2-IMM tomove relative to the fixed part 2-10, wherein the correction component2-IMC can be used to drive the photosensitive element 2-IMM to movealong the second and third dimensions relative to the fixed part 2-10.In some embodiments, the correction component 2-IMC may include coilsand magnets, and the driving force for driving the photosensitiveelement 2-IMM is generated by applying current to the coils and themagnets. In other embodiments, the correction component 2-IMC mayinclude a bias element made of shape memory alloys (SMA) to generatedriving force for the photosensitive element 2-IMM.

The optical axis 2-O and the main axis 2-Q are not parallel. In someembodiments, the main axis 2-Q is perpendicular to the optical axis 2-O.The maximum size of the optical element drive mechanism 2-100 in thedirection of the spindle 2-Q is smaller than the size of the opticalelement drive mechanism 2-100 in the direction of the optical axis 2-O.The maximum dimension of the optical element driving mechanism 2-100 inthe direction of the spindle 2-Q is smaller than the dimension of theoptical element driving mechanism 2-100 in the third direction 2-D3.

The detailed structure of the optical element driving mechanism 2-100will be described below.

FIG. 3 is an exploded schematic diagram of the optical element drivingmechanism 2-100, and FIG. 4 is a schematic diagram of the opticalelement driving mechanism 2-100 after assembly. The optical elementdriving mechanism 2-100 includes a fixed part 2-10, a movable part 2-30,a driving assembly 2-MC and a supporting assembly 2-SS. The movable partis used to connect an optical element 2-LS (such as a lens or a lensassembly), the driving assembly 2-MC is used to drive the movable part2-30 to move relative to the fixed part 2-10, and the movable part 2-30is movable relative to the fixed part 2-10 in multiple dimensions viathe supporting assembly 2-SS.

The fixed part 2-10 includes a casing 2-11 and a base 2-12 correspondingto each other, which are arranged along a main axis 2-Q (Y-axis), andhas an accommodation space for the movable part 2-30, the drivingassembly 2-MC and the supporting assembly 2-SS, to protect them. In someembodiments, the fixed part 2-10 has a polygonal structure when viewedalong the direction of the main axis 2-Q. The movable part 2-30 isarranged on the base 2-12. The driving assembly 2-MC is disposed on themovable part 2-30 and the fixed part 2-10, and is used to drive themovable part 2-30 and the optical element 2-LS to move relative to thefixed part 2-10, thereby adjusting the posture or position of themovable part 2-30 with the optical element 2-LS, to achieve the purposeof optical zooming), auto-focusing (AF) or optical image stabilization(OIS).

The casing 2-11 includes a top wall 2-111 and a side wall 2-112. The topwall 2-111 has a plate-shaped structure; and the top wall 2-111 is notparallel to the main axis 2-Q. In some embodiments, the top wall 2-111is perpendicular to the main axis 2-Q. The side wall 2-112 has a platestructure and extends from the edge of the top wall 2-111. The top wall2-111 is not parallel to the side wall 2-112, and the side wall 2-112 isparallel to the main axis 2-Q. The base 2-12 has a plate-shapedstructure and is not parallel to the main axis 2-Q. In some embodiments,the base 2-12 is perpendicular to the main axis 2-Q.

Referring to FIGS. 3 and 5 , the movable part 2-30 includes an opticalelement holder 2-31 and a driving assembly holder 2-32, and the opticalelement holder 2-31 is used for connecting the optical element 2-LS, thedriving assembly holder 2-32 is connected to at least a part of thedriving assembly 2-MC. The driving assembly MC includes a plurality ofcoils 2-C1 to 2-C3 and a plurality of magnetic elements 2-M1 to 2-M3(Those elements will be detailed later). The driving assembly holder2-32 is connected to or carries at least a part of the driving assembly2-MC, for example, is connected to the first and second magneticelements 2-M1 and 2-M2 of the driving assembly 2-MC.

Referring to FIGS. 3 and 6 , regarding the driving assembly 2-MC, it maybe an electromagnetic driving assembly, including a plurality of coils(including first, second, and third coils 2-C1, 2-C2, 2-C3) and aplurality of magnetic elements (including the first, second, and thirdmagnetic elements 2-M1, 2-M2, 2-M3).

When a driving signal is applied to the driving assembly 2-MC (forexample, a current is applied to the driving coil by an external powersupply), a magnetic force is generated between the magnetic element andthe coil, which can drive the movable part 2-30 to move relative to thefixed part 2-10. In this way, the driving assembly 2-MC can drive themovable part 2-30 and the optical element 2-LS to move along the opticalaxis 2-O, or move in a plane perpendicular to the optical axis 2-O, soas to achieve the optical image anti-shake, auto-focusing or changingthe focal length.

Through the driving assembly 2-MC, the optical element holder 2-31 canmove relative to the driving assembly holder 2-32, the optical elementholder 2-31 can move relative to the fixed part 2-10, and the drivingassembly holder 2-32 can move relative to the fixed part 2-10. Thedriving assembly 2-MC is used to drive the optical element holder 2-31to move along a first dimension relative to the driving assembly holder2-32, for example, through the first coil 2-C1 and the first magneticelement 2-M1. The driving assembly 2-MC is used to drive the drivingassembly holder 32 to move along a second dimension relative to thefixed part 2-10, for example, through the second coil 2-C2 and thesecond magnetic element 2-M2. The driving assembly 2-MC is used to drivethe driving assembly holder 2-32 to move along a third dimensionrelative to the fixed part 2-10, for example, through the third coil2-C3 and the first magnetic element 2-M1 or the third magnetic element2-M3. The aforementioned first and second dimensions are different; thesecond and third dimensions are different; the first dimension can bemovement parallel to the first direction 2-D1; the movement in seconddimension can be a movement that is parallel to the second direction2-D2; the third dimension movement can be a movement that is parallel tothe third direction 2-D3. The first, second, and third directions 2-D1,2-D2, and 2-D3 are not parallel to each other; the first, second, andthird directions are perpendicular to each other; the second dimensionis parallel to the optical axis 2-O of the optical element 2-LS.

In some embodiments, each first magnetic element 2-M1 may include twofirst and second sub-magnetic elements 2-M11, 2-M12 with differentthicknesses (in the X-axis direction), and they are arranged in the mainaxis 2-Q direction.

Continuing to refer to FIG. 6 , the optical element holder 2-31 furtherincludes a notch 2-311, and the arrangement direction of the notch 2-311and the optical axis 2-O is perpendicular to the third direction 2-D3.The arrangement direction of the notch 2-311 and the optical axis 2-O isparallel to the first direction 2-D1. With the notch 2-311, the overallmechanism is thinner and the optical quality can be improved.

Referring to FIG. 7 , the driving assembly bearing base 2-32 alsoincludes a metal reinforcement assembly 2-321, which can strengthen theoverall mechanical strength of the driving assembly bearing base 2-32.The metal reinforcement assembly 2-321 includes a main body 2-3210, afirst reinforcement element 2-3211, a second reinforcement element2-3212, and a third reinforcement element 2-3213. The main body 2-3210has a non-metallic material. The first reinforcement element 2-3211 ismade of a metal material and is at least partially embedded in the mainbody 2-3210, and at least partially exposed from the main body 2-3210.The second reinforcement element 2-3212 is at least partially embeddedin the main body 2-3210, and at least partially exposed from the mainbody 2-3210. The exposed parts of the main body of the first and secondreinforcing elements 2-3211 and 2-3212 extend in parallel 2-D3 along thethird direction 2-D3. The third reinforcement element 2-3213 is made ofa magnetic metal material, and is at least partially embedded in themain body 2-3210, and at least partially exposed from the main body2-3210, and faces or contacts the second magnetic element 2-M2. Sincethe third reinforcement element 2-3213 is made of a magnetic metalmaterial, the magnetic force between the magnetic element 2-M1˜2-M3 andthe coil 2-C1˜2-C3 can be concentrated in a predetermined direction,thereby strengthening the driving ability of the driving assembly 2-MC,and can reduce the effect of magnetic interference, and enhance theoverall mechanical strength of the driving assembly holder 2-32. In someembodiments, the third reinforcement element 2-3213 can be used as apermeability element.

The driving assembly holder 2-32 has an opening 2-32H, and the opening2-32H has an outer opening portion 2-32H1, an inner opening portion2-32H2, and an opening incline group 2-32HS. The opening area of theinner opening portion 2-32H2 is larger than the opening area of theouter opening portion 2-32H1. The opening incline group 2-32HS islocated between the outer opening 2-32H1 and the inner opening 2-32H2,and connects the two. In some embodiments, an incline surface of theopening incline group 2-32HS connecting the outer opening 2-32H1 and theinner opening 2-32H2 is inclined by 25 to 30 degrees with respect to thereference plane XZ plane (or the top wall 2-111). Through the openingincline group 2-32HS, optical characteristics can be increased.

Referring to FIGS. 3 and 6 , the supporting assembly 2-SS includes afirst elastic element 2-S1 and a second elastic element 2-S2. Theoptical element holder 2-31 is movably connected to the driving assemblyholder 2-32 via the first elastic element 2-S1. The first elasticelement 2-S1 has a plate-shaped structure, and its extending directionis parallel to a first imaginary plane (ZX plane). The optical elementholder 2-31 is movably connected to the driving assembly holder 2-32 viathe second elastic element 2-S2. The second elastic element 2-S2 has aplate-shaped structure; the extending direction of the second elasticelement 2-S2 is parallel to the first imaginary plane. The centers ofthe first and second elastic elements 2-S1, 2-S2 are arranged along thethird direction 2-D3, and the first imaginary plane passes through thefirst and second elastic elements 2-S1, 2-S2. The first imaginary planeis perpendicular to the main axis 2-Q, and the first imaginary plane isparallel to the optical axis 2-O.

The supporting assembly 2-SS further includes a plurality of thirdelastic elements 2-S3, and the movable part 2-30 is movably connected tothe fixed part 2-10 via the third elastic element 2-S3. The thirdelastic element 2-S3 has an elongated structure, the extending directionof the third elastic element 2-S3 is not parallel to the optical axis2-O direction, the third elastic element 2-S3 is not parallel to thefirst imaginary plane, and the third elastic element 2-S3 isperpendicular to the first imaginary plane. In some embodiments, theplurality of third elastic elements 2-S3 can be used as an elasticassembly. In some embodiments, the supporting assembly 2-SS may includeone third elastic element 2-S3, so that the movable part 2-30 can bemovably connected to the fixed part 2-10.

The supporting assembly 2-SS also includes a fourth elastic element 2-S4and a fifth elastic element 2-S5, which are arranged on the bottom sideof the optical element holder 2-31 for elastically connecting themovable part 2-30 and fixed part 2-10.

Referring to FIG. 3 , in some embodiments, the optical element drivingmechanism 2-100 further includes a sensing assembly 2-N for sensing themovement of the movable part 2-30 relative to the fixed part 2-10. Thesensing assembly 2-N includes: a first sensing element 2-N1 for sensingthe movement of the optical element holder 2-31 relative to the drivingassembly holder 2-32, wherein the first sensing element 2-N1 is used forsensing the movement of the optical element holder 2-31 relative to thedriving assembly holder 2-32 in the first dimension; a second sensingelement 2-N2 for sensing the movement of the driving assembly holder2-32 relative to the fixed part 2-10, wherein the second sensing element2-N2 for sensing the movement of the driving assembly holder 2-32relative to the fixed part 2-10 in the second dimension; and a thirdsensing element 2-N3 is used to sense the movement of the drivingassembly holder 2-32 relative to the fixed part 2-10, wherein the thirdsensing element 2-N3 is used to sense the movement of the drivingassembly bearing base 2-32 relative to the fixed part 2-10 in the thirddimension.

The first control unit 2-CN is electrically connected to the drivingassembly 2-MC and the second sensing element 2-N2, and controls thedriving assembly 2-MC according to the sensing signal output by thesecond sensing element 2-N2. The first control unit 2-CN and the secondsensing element 2-N2 are located in a packaging unit 2-I; the first andthird sensing elements 2-N1, 2-N3 and the driving assembly 2-MC areelectrically connected to an external control unit 2-OT, which islocated outside the optical element driving mechanism 2-100. The firstcontrol unit 2-CN is electrically connected to the external control unit2-OT; the packaging unit 2-I is located in the optical element drivingmechanism 2-100; and the first and third sensing elements 2-N1, 2-N2 arelocated in the optical element driving mechanism 2-100.

The optical element driving mechanism 2-100 also includes a circuitelement 2-F, electrically connected to the first, second, and thirdsensing elements 2-N1, 2-N2, 2-N3. The driving assembly 2-MC and thefirst sensing element 2-N1 are respectively located on opposite sides(or upper and lower sides) of the circuit element 2-F, wherein thedriving assembly 2-MC and the second and third sensing elements 2-N2,2-N3 are respectively located on the opposite sides (or upper and lowersides) of circuit element 2-F. The base 2-12 includes a plurality ofreceiving portions 2-AP, corresponding to the first to third sensingelements 2-N1 to 2-N3. In the first direction 2-D1, the maximum size ofthe receiving portion 2-AP is larger than the maximum sizes of thefirst, second and third sensing elements 2-N1-2-N3, so the base 2-12 canprotect the sensing elements 2-N1-2-N3 to avoid damage caused by impact.

Referring to FIGS. 8 and 9 , the optical element driving mechanism 2-100also includes a protective element 2-PR, such as glue, adhesive, gel orcolloid, which is arranged in the receiving portions 2-AP to protect thefirst to the third sensing elements 2-N1 to 2-N3. In this embodiment,the protection element 2-PR directly contacts the receiving portions2-AP and the first to third sensing elements 2-N1 to 2-N3. In addition,a limiting structure 2-UL is formed around the receiving portions 2-APto limit the setting range of the protection element 2-PR, so as toprevent the protection element 2-PR from overflowing when the protectionelement 2-PR is applied. In the direction perpendicular to the firstdirection 2-D1, the maximum size of the limiting structure 2-UL isgreater than the maximum size of the receiving part 2-AP. The fixed part2-10 also includes an insulating element 2-PV disposed on the base 2-12and directly contacting the electrical connecting member 2-B (FIG. 11 ,which will be described later) to avoid the electrical connecting member2-B and other circuits are short-circuited (such as electricalcomponents in the optical element driving mechanism 2-100). In someembodiments, the insulating element 2-PV directly contacts the base2-12, directly contacts the frame 2-13, and directly contacts the casing2-11.

Referring to FIGS. 6 and 10 , the base 2-12 includes: a non-metal body2-120 and a first metal portion 2-121. The non-metal body 2-120 has aplate-shaped structure. The first metal portion 2-121 is made of metaland is at least partially embedded in the non-metal body 2-120, and thecasing 2-11 has metal material and is welded to the first metal portion2-121 through welding (by a metal connection processing method such assoldering, welding or resistance welding). The shortest distance betweenthe first metal portion 2-121 and the casing (which can be zero) is lessthan the shortest distance 2-d 1 between the non-metal body 2-120 andthe casing, to ensure that the casing 2-11 and the first metal part2-121 can actually contact, thereby improving the welding quality.

The aforementioned base 2-12 also includes a second metal portion 2-122having metal material and at least partially embedded in the non-metalbody 2-120; the casing 2-11 and the second metal portion 2-122 areconnected by welding. Similarly, the shortest distance (may be zero)between the second metal portion 2-122 and the casing 2-11 is smallerthan the shortest distance between the non-metal body 2-120 and thecasing 2-11 (such as the distance 2-d 1).

Referring to FIGS. 3 and 6 , the weld between the first and second metalportions 2-121, 2-122 and the casing 2-11 is located at the side 2-10S1of the fixed part 2-10. The opening 2-10H of the fixed part 2-10 iscorresponding to light. When viewed along the main axis 2-Q direction,the opening 2-10H is located at the side 2-10S1. The side wall 2-112 ofthe casing 2-11 has a plurality of (at least two) grooves 2-1121 and2-1122, corresponding to the first and second metal portions 2-121 and2-122, respectively. The grooves 2-1121, 2-1122 and the opening 2-10Hare located on the side surface 2-10P1 of the fixed part 2-10. The sidesurface 2-10P1 is perpendicular to the optical axis 2-O; the sidesurface 2-10P1 is parallel to the main axis 2-Q; the casing 2-11 iselectrically connected to an external ground circuit via the first metalportion 2-121 for grounding.

Referring to FIG. 11 , the frame 2-13 of the fixed part 2-10 is fixedlydisposed on the casing 2-11. The frame 2-13 has an extension portion2-130 extending toward the base 2-12. When viewed along the direction ofthe main axis 2-Q, the extension portion 2-130 is located at the cornerof the fixed part 2-10. The frame 2-13 also has a first circuit 2-131electrically connected to the driving assembly 2-MC. The first circuit2-131 is at least partially embedded in the frame 2-13, and is notexposed outside the frame 2-13. The first circuit 2-131 is at leastpartially located or embedded in the extension portion 2-130, the firstcircuit 2-131 is electrically connected to the aforementioned circuitelement 2-F, and the first circuit 2-131 is electrically connected tocircuit element 2-F via the electrical connecting members 2-B (forexample, solders). The surface of the first circuit 2-131 directly incontact with the electrical connecting members 2-B is not parallel tothe surface of the circuit element 2-F directly in contact with theelectrical connecting members 2-B. In some embodiments, the surface ofthe first circuit 2-131 directly contacting the electrical connectingmembers 2-B is perpendicular to the surface of the circuit element 2-Fdirectly contacting the electrical connecting members 2-B.

The extension portion 2-130 of the frame 2-13 corresponds to the sidewall 2-112 of the casing 2-11, and the extension portion 2-130 has arecessed structure 2-1351 to accommodate a connecting element 2-AD, suchas glue, adhesive, gel or colloid. The connecting element 2-AD directlycontacts the casing 2-11 and the frame 2-13, and the connecting element2-AD directly contacts the base 2-12.

Referring to FIG. 12 , the optical element holder 2-31 is formed with afirst anti-reflection surface 2-W1; the driving assembly holder 2-32 isformed with a second anti-reflection surface 2-W2; and the frame 2-13 isformed with a third anti-reflection surface 2-W3 and a fourthanti-reflection surface 2-W4. In some embodiments, the optical elementdriving mechanism 2-100 can be defined as further including a straylight preventing component 2-W, which is used to prevent a stray lightgenerated by light reflected (via the optical path adjustment unit 2-P)from entering and passing through the opening 2-10H of the fixed part2-10 (or of the casing 2-11). The stray light preventing component 2-Wincludes: a first anti-reflection surface 2-W1, a second anti-reflectionsurface 2-W2, a third anti-reflection surface 2-W3, and a fourthanti-reflection surface 2-W4.

The aforementioned first anti-reflection surface 2-W1 has a planarstructure and is not parallel or perpendicular to the optical axis 2-O.The first anti-reflection surface 2-W1 is disposed on the opticalelement holder 2-31. In this embodiment, the reflectivity of the firstanti-reflective surface 2-W1 is lower than that of the optical elementholder surface 2-317 of the optical element holder 2-31, and the firstanti-reflective surface 2-W1 and the optical element holder surface2-317 are not parallel. The roughness of the first anti-reflectionsurface 2-W1 is different from the roughness of the optical elementholder surface 2-317. The first anti-reflection surface 2-W1 has ananti-reflection coating. The first anti-reflection surface 2-W1 facesthe opening 2-10H.

The aforementioned second anti-reflective surface 2-W2 has a planarstructure, is arranged on the driving assembly holder 2-32, and is notparallel or perpendicular to the optical axis 2-O. The reflectivity ofthe second anti-reflective surface 2-W2 is lower than the reflectivityof the driving assembly holder surface 2-327 of the driving assemblyholder 2-32. The second anti-reflection surface 2-W2 is not parallel tothe driving assembly holder surface 2-327. The roughness of the secondanti-reflective surface 2-W2 is different in the roughness of thedriving assembly holder surface 2-327. The second anti-reflectionsurface 2-W2 has an anti-reflection coating. The second anti-reflectionsurface 2-W2 faces the opening 2-10H. When viewed along the direction ofthe optical axis 2-O, the first anti-reflection surface 2-W1 and thesecond anti-reflection surface 2-W2 at least partially overlap.

The aforementioned third anti-reflection surface 2-W3 has a planarstructure, is disposed on the frame 2-13, and is not parallel orperpendicular to the optical axis 2-O. The reflectivity of the thirdanti-reflection surface 2-W3 is lower than the reflectivity of the framesurface 2-137 of the frame 2-13. The third anti-reflection surface 2-W3is not parallel to the frame surface 2-137. The roughness of the thirdanti-reflection surface 2-W3 is different from the roughness of theframe surface 2-137. The third anti-reflection surface 2-W3 has ananti-reflection coating. The third anti-reflection surface 2-W3 facesthe opening 2-10H. When viewed along the optical axis direction 2-O, thesecond anti-reflection surface 2-W2 and the third anti-reflectionsurface 2-W3 at least partially overlap, and the first anti-reflectionsurface 2-W1 and the third anti-reflection surface 2-W3 at leastpartially overlap.

The aforementioned fourth anti-reflection surface 2-W4 has a planarstructure, and is disposed on the frame 2-13, and is not parallel orperpendicular to the optical axis 2-O. The reflectivity of the fourthanti-reflection surface 2-W4 is lower than that of the frame surface2-137. In some embodiments, the third and fourth anti-reflectivesurfaces 2-W3, 2-W4 have the same reflectivity. The fourthanti-reflection surface 2-W4 is not parallel to the frame surface 2-137.The roughness of the fourth anti-reflection surface 2-W4 is differentfrom the roughness of the frame surface 2-137. The fourthanti-reflection surface 2-W4 has an anti-reflection coating. The fourthanti-reflection surface 2-W4 faces the optical element 2-LS. When viewedalong the optical axis 2-O direction, the first anti-reflection surface2-W1 and the fourth anti-reflection surface 2-W4 at least partiallyoverlap, and the second anti-reflection surface 2-W2 and the fourthanti-reflection surface 2-W4 at least partially overlap, and the thirdanti-reflection surface 2-W3 and the fourth anti-reflection surface 2-W4at least partially overlap.

The above-mentioned stray light preventing component 2-W can be used toprevent extra reflections generated by light in the mechanism, or toshield extra reflected stray light so that stray light does not easilyenter the opening 2-10H of the fixed part 2-10, greatly improve thequality of shooting or optics.

In summary, an embodiment of the present invention provides an opticalelement driving mechanism, including a movable part for connecting anoptical element; a fixed part, wherein the movable part can moverelative to the fixed part; a driving assembly for driving the movablepart to move relative to the fixed part; and a supporting assembly,wherein the movable part can move relative to the fixed part in multipledimensions via the supporting assembly.

The embodiment of the present invention has at least one of thefollowing advantages or effects. In the periscope optical system, bydriving the optical element in three dimensions in the optical elementdriving mechanism, wherein the optical path adjustment unit isrelatively fixed and does not move, the alignment procedures between thecomponents can be simplified, thereby improving the assembly efficiency.Furthermore, the overall mechanism can be miniaturized. In someembodiments, the anti-reflection surfaces can effectively reduce thestray light generated when light is reflected or refracted by theoptical path adjustment unit, so as to improve the optical quality. Itcan also adjust the wide range of shooting by zooming, focusing andoptical anti-shake, and better optical quality can be acquired even whenthere are external interference elements.

Use of ordinal terms such as “first”, “second”, “third”, etc., in theclaims to modify a claim element does not by itself connote anypriority, precedence, or order of one claim element over another or thetemporal order in which acts of a method are performed, but are usedmerely as labels to distinguish one claim element having a certain namefrom another element having the same name (but for use of the ordinalterm) to distinguish the claim elements.

It will be apparent to those skilled in the art that variousmodifications and variations can be made in the invention. It isintended that the standard and examples be considered as exemplary only,with the true scope of the disclosed embodiments being indicated by thefollowing claims and their equivalents.

What is claimed is:
 1. An optical element driving mechanism, comprising:a movable part, including an optical element holder for connecting anoptical element, wherein the optical element is configured to receive anincident light adjusted by an optical path adjusting unit; a fixed part,wherein the movable part is movable relative to the fixed part; adriving assembly, configured to drive the movable part to move relativeto the fixed part; a driving assembly holder, connected to at least apart of the driving assembly; and a supporting assembly, wherein themovable part is movable relative to the fixed part in multipledimensions via the supporting assembly, wherein the driving assembly hasa first coil, a second coil, a third coil, a first magnet, and a secondmagnet, wherein the first coil and the first magnet are configured todrive the optical element holder to move along a first dimensionrelative to the driving assembly holder, wherein the second coil and thesecond magnet are configured to drive the driving assembly holder tomove along a second dimension relative to the fixed part, wherein thethird coil and the first magnet are configured to drive the drivingassembly holder to move along a third dimension relative to the fixedpart, wherein the first dimension is parallel to a first direction, thesecond dimension is parallel to a second direction, and the thirddimension is parallel to a third direction, wherein the first, second,and third directions are perpendicular to each other, and wherein theoptical element holder further includes a notch, an arrangementdirection of the notch and the optical axis is perpendicular to thethird direction, and the arrangement direction of the notch and theoptical axis is parallel to the first direction.
 2. The optical elementdriving mechanism as claimed in claim 1, wherein the driving assemblyholder further includes a metal reinforcement assembly for strengtheningthe mechanical strength of the driving assembly holder, and the metalreinforcement assembly includes: a main body with non-metallic material;a first reinforcement element having metal material and at leastpartially embedded in the main body; the first reinforcement element isat least partially exposed on the main body; a second reinforcementelement at least partially embedded in the main body; the secondreinforcement element is at least partially exposed on the main body;the parts of the first and second reinforcement elements exposed on themain body extend along a direction that is parallel to the thirddirection; a third strengthening element having magnetic metal materialand at least partially embedded in the main body; the thirdstrengthening element is at least partially exposed on the main body;and the third strengthening element is configured to strengthen thedriving capability of the driving assembly.
 3. The optical elementdriving mechanism as claimed in claim 1, wherein: the fixed part furtherincludes: a base; and a casing arranged along a main axis with the base;the casing further includes: a top wall having a plate-like structure,wherein the top wall is not parallel to the main axis, and the top wallis perpendicular to the main axis; and a side wall, having a platestructure and extending from an edge of the top wall, wherein: the topwall is not parallel to the side wall; the side wall is parallel to themain axis; the base has a plate-shaped structure and is not parallel tothe main axis; the base is perpendicular to the main axis; the opticalaxis is not parallel to the main axis; and the main axis isperpendicular to the optical axis.
 4. The optical element drivingmechanism as claimed in claim 3, wherein the maximum dimension of theoptical element driving mechanism in the main axis direction is smallerthan the dimension of the optical element driving mechanism in theoptical axis direction; wherein the maximum dimension of the opticalelement driving mechanism in the main axis direction is smaller than thedimension of the optical element driving mechanism in the thirddirection.
 5. The optical element driving mechanism as claimed in claim3, wherein the supporting assembly further includes: a first elasticelement, wherein the optical element holder is movably connected to thedriving assembly holder via the first elastic element; the first elasticelement has a plate-shaped structure; an extension direction of thefirst elastic element is parallel to a first imaginary plane; a secondelastic element, wherein the optical element holder is movably connectedto the driving assembly holder via the second elastic element; thesecond elastic element has a plate-shaped structure; an extensiondirection of the second elastic element is parallel to the firstimaginary plane; centers of the first and second elastic elements arearranged along the third direction; the first imaginary plane passesthrough the first elastic element and the second elastic element; thefirst imaginary plane is perpendicular to the main axis; the firstimaginary plane is parallel to the optical axis; a third elasticelement, wherein the movable part is movably connected to the fixed partvia the third elastic element; the third elastic element has anelongated structure, and an extension direction of the third elasticelement is not parallel to the optical axis direction; the third elasticelement is not parallel to the first imaginary plane; and the thirdelastic element is perpendicular to the first imaginary plane.
 6. Theoptical element driving mechanism as claimed in claim 1, furtherincluding a sensing assembly for sensing the movement of the movablepart relative to the fixed part, and the sensing assembly includes: afirst sensing element for sensing the movement of the optical elementholder relative to the driving assembly holder; wherein the firstsensing element is used for sensing the movement of the optical elementholder relative to the driving assembly holder in the first dimension; asecond sensing element for sensing the movement of the driving assemblyholder relative to the fixed part; the second sensing element is usedfor sensing the movement of the driving assembly holder relative to thefixed part in the second dimension; a third sensing element for sensingthe movement of the driving assembly holder relative to the fixed part;the third sensing element is used for sensing the movement of thedriving assembly holder in the third dimension relative to the fixedpart.
 7. The optical element driving mechanism as claimed in claim 6,wherein the sensing assembly further includes: a first control unitelectrically connected to the driving element and the second sensingelement and controlling the driving element according to the sensingsignal output by the second sensing element; the first control unit andthe second sensing element are located in a packaging unit; the firstand third sensing elements and the driving assembly are electricallyconnected to an external control unit; the first control unit iselectrically connected to the external control unit; the packaging unitis located in the optical element driving mechanism; the first and thirdsensing elements are located in the optical element driving mechanism;and the external control unit is located outside the optical elementdriving mechanism.
 8. The optical element driving mechanism as claimedin claim 6, further comprising a circuit element electrically connectedto the first, second and third sensing elements, wherein: the drivingassembly and the first sensing element are respectively located onopposite sides of the circuit element; the driving assembly and thesecond sensing element are respectively located on opposite sides of thecircuit element; the driving assembly and the third sensing element arerespectively located on opposite sides of the circuit element; the fixedpart further includes a base and casing, the casing and the base arearranged along a main axis; the base further includes an receivingportion corresponding to at least one of the first, second, and thirdsensing elements; in the first direction, the maximum size of thereceiving portion is greater than the maximum size of at least one ofthe first, second, and third sensing elements; a protection elementarranged in the receiving part for protecting at least one of the first,second and third sensing elements; the protection element directlycontacts the receiving portion and at least one of the first, second,and third sensing elements; a limiting structure adjacent to thereceiving portion to limit the setting range of the protection element;in the direction perpendicular to the first direction, the maximum sizeof the current limiting structure is greater than the maximum size ofthe receiving portion.
 9. The optical element driving mechanism asclaimed in claim 8, wherein the fixed part further includes a frame,which is fixedly arranged on the casing and has a first circuitelectrically connected to the driving assembly; the first circuit is atleast partially buried in the frame and is not exposed outside theframe; the frame has an extension portion extending toward the base;when viewed along the main axis direction, the extension portion islocated at the corner of the fixed part; the extension corresponds tothe side wall; the extension portion has a recessed structure toaccommodate a connecting element; the connecting element directlycontacts the casing and the frame; the connecting element directlycontacts the base; the first circuit is at least partially located inthe extension portion; the first circuit is at least partially buried inthe extension portion; the first circuit is electrically connected tothe circuit element; the first circuit is electrically connected to thecircuit element via an electrical connecting member; the surface of thefirst circuit that directly contacts the electrical connecting memberand the surface of the circuit element that directly contacts theelectrical connecting member are not parallel; the surface of the firstcircuit directly contacting the electrical connecting member and thesurface of the circuit element directly contacting the electricalconnecting member are perpendicular to each other; the fixed partfurther includes an insulating element that directly contacts theelectrical connecting member; the insulating element directly contactsthe base; the insulating element directly contacts the frame; and theinsulating element directly contacts the casing.
 10. An optical elementdriving mechanism, comprising: a movable part, including an opticalelement holder for connecting an optical element, wherein the opticalelement is configured to receive an incident light adjusted by anoptical path adjusting unit; a fixed part, wherein the movable part ismovable relative to the fixed part; a driving assembly, configured todrive the movable part to move relative to the fixed part; a drivingassembly holder, connected to at least a part of the driving assembly;and a supporting assembly, wherein the movable part is movable relativeto the fixed part in multiple dimensions via the supporting assembly,wherein the driving assembly has a first coil, a second coil, a thirdcoil, a first magnet, and a second magnet, wherein the first coil andthe first magnet are configured to drive the optical element holder tomove along a first dimension relative to the driving assembly holder,wherein the second coil and the second magnet are configured to drivethe driving assembly holder to move along a second dimension relative tothe fixed part, wherein the third coil and the first magnet areconfigured to drive the driving assembly holder to move along a thirddimension relative to the fixed part, wherein the second dimension isparallel to an optical axis of the optical element, wherein thesupporting assembly includes a first elastic element that has aplate-shaped structure, and the optical element holder is movablyconnected to the driving assembly holder via the first elastic element,wherein the first dimension is parallel to a first direction, the seconddimension is parallel to a second direction, and the third dimension isparallel to a third direction, wherein the first, second, and thirddirections are perpendicular to each other, wherein the fixed partfurther includes a base and a casing arranged along a main axis with thebase, and the casing further includes a top wall and a side wall,wherein the top wall is perpendicular to the main axis, and the sidewall extends from an edge of the top wall, wherein the top wall is notparallel to the side wall, the side wall is parallel to the main axis,and the base is perpendicular to the main axis, wherein the optical axisis not parallel to the main axis, and the main axis is perpendicular tothe optical axis, wherein the supporting assembly further includes asecond elastic element and a third elastic element, the optical elementholder is movably connected to the driving assembly holder via thesecond elastic element, and the movable part is movably connected to thefixed part via the third elastic element, wherein the extensiondirection of the first elastic element is parallel to a first imaginaryplane, the extension direction of the second elastic element is parallelto the first imaginary plane, and the centers of the first and secondelastic elements are arranged along the third direction, wherein thefirst imaginary plane passes through the first elastic element and thesecond elastic element, and the first imaginary plane is perpendicularto the main axis and parallel to the optical axis, wherein the thirdelastic element has an elongated structure, and the extension directionof the third elastic element is not parallel to the optical axis, andwherein the third elastic element is perpendicular to the firstimaginary plane.
 11. The optical element driving mechanism as claimed inclaim 10, wherein: the optical element holder further includes a notch,and an arrangement direction of the notch and the optical axis isperpendicular to the third direction; the arrangement direction of thenotch and the optical axis is parallel to the first direction; thedriving assembly holder further includes a metal reinforcement assemblyfor strengthening the mechanical strength of the driving assemblyholder, and the metal reinforcement assembly includes: a main body withnon-metallic material; a first reinforcement element having metalmaterial and at least partially embedded in the main body; the firstreinforcement element is at least partially exposed on the main body; asecond reinforcement element at least partially embedded in the mainbody; the second reinforcement element is at least partially exposed onthe main body; the parts of the first and second reinforcement elementsexposed on the main body extend along a direction that is parallel tothe third direction; a third strengthening element having magnetic metalmaterial and at least partially embedded in the main body; the thirdstrengthening element is at least partially exposed on the main body;and the third strengthening element is configured to strengthen thedriving capability of the driving assembly.
 12. The optical elementdriving mechanism as claimed in claim 10, wherein the maximum dimensionof the optical element driving mechanism in the main axis direction issmaller than the dimension of the optical element driving mechanism inthe optical axis direction; wherein the maximum dimension of the opticalelement driving mechanism in the main axis direction is smaller than thedimension of the optical element driving mechanism in the thirddirection.
 13. The optical element driving mechanism as claimed in claim10, further including a sensing assembly for sensing the movement of themovable part relative to the fixed part, and the sensing assemblyincludes: a first sensing element for sensing the movement of theoptical element holder relative to the driving assembly holder; whereinthe first sensing element is used for sensing the movement of theoptical element holder relative to the driving assembly holder in thefirst dimension; a second sensing element for sensing the movement ofthe driving assembly holder relative to the fixed part; the secondsensing element is used for sensing the movement of the driving assemblyholder relative to the fixed part in the second dimension; a thirdsensing element for sensing the movement of the driving assembly holderrelative to the fixed part; the third sensing element is used forsensing the movement of the driving assembly holder in the thirddimension relative to the fixed part.
 14. An optical element drivingmechanism, comprising: a movable part, including an optical elementholder for connecting an optical element, wherein the optical element isconfigured to receive an incident light adjusted by an optical pathadjusting unit; a fixed part, wherein the movable part is movablerelative to the fixed part; a driving assembly, configured to drive themovable part to move relative to the fixed part, having a first coil, asecond coil, a third coil, a first magnet, and a second magnet; adriving assembly holder, connected to at least a part of the drivingassembly; a supporting assembly, wherein the movable part is movablerelative to the fixed part in multiple dimensions via the supportingassembly; and a sensing assembly for sensing the movement of the movablepart relative to the fixed part; wherein the first coil and the firstmagnet are configured to drive the optical element holder to move alonga first dimension relative to the driving assembly holder; wherein thesecond coil and the second magnet are configured to drive the drivingassembly holder to move along a second dimension relative to the fixedpart; wherein the third coil and the first magnet are configured todrive the driving assembly holder to move along a third dimensionrelative to the fixed part; wherein the second dimension is parallel toan optical axis of the optical element; wherein the supporting assemblyincludes a first elastic element that has a plate-shaped structure, andthe optical element holder is movably connected to the driving assemblyholder via the first elastic element; wherein the first dimension isparallel to a first direction, the second dimension is parallel to asecond direction, and the third dimension is parallel to a thirddirection, wherein the first, second, and third directions areperpendicular to each other; wherein the sensing assembly includes afirst sensing element for sensing the movement of the optical elementholder relative to the driving assembly holder in the first dimension, asecond sensing element for sensing the movement of the driving assemblyholder relative to the fixed part in the second dimension, and a thirdsensing element for sensing the movement of the driving assembly holderin the third dimension relative to the fixed part; wherein the sensingassembly further includes a first control unit electrically connected tothe driving element and the second sensing element and controlling thedriving element according to the sensing signal output by the secondsensing element; wherein the first control unit and the second sensingelement are located in a packaging unit; wherein the first and thirdsensing elements and the driving assembly are electrically connected toan external control unit; wherein the first control unit is electricallyconnected to the external control unit; wherein the packaging unit islocated in the optical element driving mechanism; wherein the first andthird sensing elements are located in the optical element drivingmechanism; and wherein the external control unit is located outside theoptical element driving mechanism.
 15. An optical element drivingmechanism, comprising: a movable part, including an optical elementholder for connecting an optical element, wherein the optical element isconfigured to receive an incident light adjusted by an optical pathadjusting unit; a fixed part, wherein the movable part is movablerelative to the fixed part; a driving assembly, configured to drive themovable part to move relative to the fixed part, having a first coil, asecond coil, a third coil, a first magnet, and a second magnet; adriving assembly holder, connected to at least a part of the drivingassembly; a supporting assembly, wherein the movable part is movablerelative to the fixed part in multiple dimensions via the supportingassembly; and a circuit element, electrically connected to the first,second and third sensing elements; wherein the first coil and the firstmagnet are configured to drive the optical element holder to move alonga first dimension relative to the driving assembly holder; wherein thesecond coil and the second magnet are configured to drive the drivingassembly holder to move along a second dimension relative to the fixedpart; wherein the third coil and the first magnet are configured todrive the driving assembly holder to move along a third dimensionrelative to the fixed part; wherein the second dimension is parallel toan optical axis of the optical element; wherein the supporting assemblyincludes a first elastic element that has a plate-shaped structure, andthe optical element holder is movably connected to the driving assemblyholder via the first elastic element; wherein the first dimension isparallel to a first direction, the second dimension is parallel to asecond direction, and the third dimension is parallel to a thirddirection, wherein the first, second, and third directions areperpendicular to each other; wherein the sensing assembly includes afirst sensing element for sensing the movement of the optical elementholder relative to the driving assembly holder in the first dimension, asecond sensing element for sensing the movement of the driving assemblyholder relative to the fixed part in the second dimension, and a thirdsensing element for sensing the movement of the driving assembly holderin the third dimension relative to the fixed part; wherein the drivingassembly and the first sensing element are respectively located onopposite sides of the circuit element; wherein the driving assembly andthe second sensing element are respectively located on opposite sides ofthe circuit element; wherein the driving assembly and the third sensingelement are respectively located on opposite sides of the circuitelement; wherein the fixed part further includes a base and a casing,the casing and the base are arranged along a main axis; wherein the basefurther includes a receiving portion corresponding to at least one ofthe first, second, and third sensing elements; wherein the maximum sizeof the receiving portion is greater than the maximum size of at leastone of the first, second, and third sensing elements in the firstdirection; wherein a protection element arranged in the receiving partfor protecting at least one of the first, second and third sensingelements; wherein the protection element directly contacts the receivingportion and at least one of the first, second, and third sensingelements; wherein a limiting structure adjacent to the receiving portionto limit the setting range of the protection element; wherein themaximum size of the limiting structure is greater than the maximum sizeof the receiving portion in the direction perpendicular to the firstdirection.
 16. An optical element driving mechanism, comprising: amovable part, including an optical element holder for connecting anoptical element, wherein the optical element is configured to receive anincident light adjusted by an optical path adjusting unit; a fixed part,wherein the movable part is movable relative to the fixed part; adriving assembly, configured to drive the movable part to move relativeto the fixed part; a driving assembly holder, connected to at least apart of the driving assembly; and a supporting assembly, wherein themovable part is movable relative to the fixed part in multipledimensions via the supporting assembly, wherein the driving assembly hasa first coil, a second coil, a third coil, a first magnet, and a secondmagnet, wherein the first coil and the first magnet are configured todrive the optical element holder to move along a first dimensionrelative to the driving assembly holder, wherein the second coil and thesecond magnet are configured to drive the driving assembly holder tomove along a second dimension relative to the fixed part, wherein thethird coil and the first magnet are configured to drive the drivingassembly holder to move along a third dimension relative to the fixedpart, wherein the second dimension is parallel to an optical axis of theoptical element, wherein the fixed part includes a frame, a base, and acasing, the casing and the base are arranged along a main axis, and theframe is fixedly arranged on the casing and has a first circuitelectrically connected to the driving assembly, wherein the frame has anextension portion extending toward the base, wherein when viewed alongthe main axis direction, the extension portion is located at the cornerof the fixed part, and wherein the first circuit is at least partiallyburied in the extension portion.